A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 5960-01-233-7667
NSN 5915-01-090-8013
NSN 6150-01-399-8141
NSN 5915-01-389-1065
NSN 6145-00-468-8534
NSN 5996-00-056-2437
NSN 6135-01-400-2947
NSN 5855-00-327-2112
NSN 5935-00-145-7534
NSN 6240-01-025-2553
NSN 6130-01-241-9509
NSN 6645-01-167-0712